Devils truth, is based on the research that noted that the world definition of half-truth is incomplete. A half-truth can be a statement that is partly true, and more importantly it can be a statement that is totally true, yet it is a lie, a paradox, because it is part-of-the-truth.

The concept dates back to the Garden of Eden. Mathematically it can be represented by the solution to the statement, 'the square root of nine' which can be positive three or negative three, and most people only give one of the two answers.

The research was conducted in Thunder Bay and involved former students of Lakehead University.